Tag Archives: file permission

Linux: Make File Undeletable / Immutable

unix linux
Explains how to make a file undeletable or immutable on Linux using extended file attributes. Even a root user will not be able to delete a file with the immutable attribute set.

UNIX / Linux: File Permissions in Octal

unix linux

To set file permissions using the chmod command, we can specify the permissions in either numeric mode or symbolic mode. But when we want to get the file permissions, most often with the ls -l command, we are normally only given a printout using the symbolic mode.